Patent classifications
A
HUMAN NECESSITIES
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A43
FOOTWEAR
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A43B
CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
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7/00
Footwear with health or hygienic arrangements
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A43B7/08
with air-holes, with or without closures
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A43B7/084
characterised by the location of the holes
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A43B7/088
in the side of the sole
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